Sleeping bag



FIG. 1 is a top plan view of a sleeping bag showing my new design, the bottom being plain and unornamented;

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image of that shown except for the placement of elements on the top surface;

FIG. 3 is a front end elevational view thereof;

FIG. 4 is an exploded perspective view thereof; and

FIG. 5 is a perspective view thereof. 

The ornamental design for a sleeping bag, as shown and described. 